A memorial for Sophia Christen, 15, is growing on Manchester Road in Derry. Christen and Lauren Gendreau, 13, were hit while they were crossing the road during a carnival.

"We were just devastated," Gendreau said. "We did not see it coming. It was like a normal day. Nothing like that has ever happened before"

Gendreau has some scratches on her arm and a swollen and bruised foot. She said that minutes after the accident, strangers were pulling over to help.

"The car came out of nowhere," she said. "It happened wicked quick."

Gendreau and her friend, Jenna Maddox, said they had just met Christen at the carnival an hour before. The girls were heading to a restroom across the street when they were hit by a car.

"We just saw Sophia lying in the street," Gendreau said.

Christen suffered severe head trauma and died at a hospital a few hours later.

Gendreau is expected to recover from her injuries, but she said it will take some time for her to emotionally recover.

"We can't get sleep or anything because before we go to bed, it's just like -- it just changes everything," she said. "Like, one day you would cross the street and you would never think that would happen, but it's definitely possible, and we are going to definitely be more careful."

Counselors were on hand at Manchester Central High School to help Christen's classmates.

DETAILS ABOUT A N ACCIDENT ON FRIDAY. MEMORIAL CONTINUES TO GROW HERE AT THE INTERSECTION WHERE SHE WAS KILLED. A 13-YEAR-OLD WAS ALSO INVOLVED. SHE IS OK. EARLIER, WE SAT DOWN FOR AN INTERVIEW WHERE SHE GOES INTO EXCLUSIVE DETAIL ABOUT THIS ACCIDENT THAT CHANGED SO MANY LIVES. IT WAS REALLY HARD. WE DID NOT SEE IT COMING. IT WAS LIKE ANY OTHER DAY. SHE HAS A SWOLLEN AND BRUISED FOOT AND SCRATCHES ON HER BUT HER SPIRIT IS INTACT CREATE -- INTACT. MANSE AFTER THE ACCIDENT ON FRIDAY NIGHT, STRANGERS WERE PULLING OVER TO HELP. TODAY SHE HAS A NEW OUTLOOK ON LIFE AFTER COMING SO CLOSE TO DEATH FRIDAY NIGHT. THE CAR CAME OUT OF NOWHERE. IT HAPPENED AT ONE SECOND. THEY HAD JUST MET SOPHIA KRISTIN AT A CARNIVAL. THE GIRLS HEADED TO USE A RESTROOM WHEN SECONDS CHANGE THE COURSE OF THEIR LIVES. WHEN THEY CROSS THE STREET, A CAR HIT THEM. SOPHIA DIED A FEW HOURS LATER. LAUREN WILL RECOVER FROM HER PHYSICAL INJURIES. EMOTIONALLY THAT IS GOING TO TAKE TIME. IT'S JUST LIKE, IT CHANGES EVERYTHING. ONE DAY YOU CROSS THE STREET AND YOU NEVER THINK THAT WOULD HAPPEN. IT IS DEFINITELY POSSIBLE NOW. WE'RE DEFINITELY GOING GOING TO BE MORE CAREFUL. THE DERRY POLICE CONTINUE TO INVESTIGATE. THEY ARE NOT COMMENTING.